code: def load_graph(filepath, custom_objects=None):
      if custom_objects is None:
          custom_objects = {}
      with keras.utils.custom_object_scope(custom_objects):
          return Graph.from_config(io_utils.load_json(filepath))
  
imports: import keras_tuner
  from tensorflow import keras
  from tensorflow import nest
  from autokeras import blocks
  from autokeras import keras_layers
  from autokeras import nodes
  from autokeras.engine import head
  from autokeras.engine import serializable
  from autokeras.utils import io_utils
label_desc: Use image node_id 2 for calling a global function with example usage: load_graph(filepath, custom_objects) and returns: Graph